<template>
    <div>
        <!--面包屑-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>
        <!---卡片视图---->
        <el-card>
            <el-alert title="添加商品信息" type="info" center :closable="false" show-icon></el-alert>
            <!---步骤条-->
            <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>
            <!----tab栏--->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
                <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                                v-model="addForm.goods_cat" expand-trigger="hover"
                                :options="catelist"
                                :props="cateProps"
                                @change="handleChange">
                            </el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">                             
                             <el-checkbox-group v-model="item.attr_vals">
                                  <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>                                  
                             </el-checkbox-group>                              
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload                          
                              :action="uploadURL"
                              :on-preview="handlePreview"
                              :on-remove="handleRemove"                              
                              list-type="picture"
                              :headers="headersObj"
                              :on-success = "handleSuccess">
                              <el-button size="small" type="primary">点击上传</el-button>                              
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor v-model="addForm.goods_introduce"></quill-editor>
                        <el-button type="primary" class="btnAdd" @click="add">添加商品 </el-button>
                    </el-tab-pane>
                </el-tabs>
            </el-form>
        </el-card>
        
    </div>
</template>
<script>
    import _ from 'lodash'
    export default {
        data(){
            return{
                activeIndex:'0',
                addForm:{
                    goods_name:'',
                    goods_price:0,
                    goods_weight:0,
                    goods_number:0,
                    goods_cat:[],
                    pics:[],
                    goods_introduce:'',
                    attrs:[]
                },                
                addFormRules:{
                    goods_name:[
                        {required:true,message:'请输入商品名称',trigger:'blur'}
                    ],
                    goods_price:[
                        {required:true,message:'请输入商品价格',trigger:'blur'}
                    ],
                    goods_weight:[
                        {required:true,message:'请输入商品重量',trigger:'blur'}
                    ],
                    goods_number:[
                        {required:true,message:'请输入商品数量',trigger:'blur'}
                    ],
                    goods_cat:[
                        {required:true,message:'请选择商品分类',trigger:'blur'}
                    ]
                },
                catelist:[],
                cateProps:{
                    label:'cat_name',
                    value:'cat_id',
                    children:'children'
                },
                manyTableData:[],
                onlyTableData:[],
                uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
                headersObj:{
                    Authorization:window.sessionStorage.getItem('token')
                }
            }
        },
        created(){
            this.getCateList()

        },
        methods:{
            async getCateList(){
                const {data:res} = await  this.$http.get('categories')
                
                if(res.meta.status!== 200){
                    return this.$message.error("获取商品分类失败")
                }
                this.catelist = res.data
                
            },
            //级联选择器变化
            handleChange(){
                if(this.addForm.goods_cat.length !== 3){
                    this.addForm.goods_cat=[]
                }
            },
            beforeTabLeave(activeName,oldActiveName){
           
                if(oldActiveName == '0' && this.addForm.goods_cat.length!==3){
                    this.$message.error('请先选择商品分类')
                    return false
                }
            },
            async tabClicked(){
                if(this.activeIndex === "1"){
                    const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                        params:{sel:'many'}
                    })
                    if(res.meta.status !== 200){
                        return this.$message.error('获取动态参数失败')
                    }
                    
                    res.data.forEach(item=>{
                        item.attr_vals = item.attr_vals.length === 0?[]:item.attr_vals.split(' ')

                    })            
                            
                    this.manyTableData = res.data                    
                }else if(this.activeIndex === "2"){
                  
                    const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                        params:{sel:'only'}
                    })
                    if(res.meta.status !== 200){
                        return this.$message.error('获取商品参数失败')
                    }
                                     
                    
                    this.onlyTableData = res.data
                    
                    
                }
            },
            handlePreview(){

            },
            handleRemove(file){                
                const filePath = file.response.data.tmp_path                
                const i = this.addForm.pics.findIndex(x=>x.pic === filePath)                
                this.addForm.pics.splice(i,1)               
                
            },
            handleSuccess(response){                
                const picInfo={pic:
                response.data.tmp_path
                }
                this.addForm.pics.push(picInfo)              
               
            },
            async add(){
                  console.log(this.addForm.goods_introduce)
                  this.$refs.addFormRef.validate(valid=>{
                      if(!valid) return this.$message.error('请填写必要的表单项')
                  })
                  const form =_.cloneDeep(this.addForm)
                  form.goods_cat = form.goods_cat.join(',')
                  this.manyTableData.forEach(item=>{
                      const newInfo={
                          attr_id:'item.attr_id',
                          attr_value:item.attr_vals.join(' ')
                      }
                      this.addForm.attrs.push(newInfo)
                  })
                  this.onlyTableData.forEach(item=>{
                      const newInfo={
                          attr_id:'item.attr_id',
                          attr_value:item.attr_vals
                      }
                      this.addForm.attrs.push(newInfo)
                  })
                  form.attrs = this.addForm.attrs
                  console.log(form.attrs)
                  const{data:res}=await this.$http.post('goods',form)
                  if(res.meta.status!== 201){
                      return this.$message.error('添加失败')
                  }
                  this.$message.success('添加成功')
                  this.$router.push('/goods')

            }
            
        },
        computed:{
            cateId(){
                if(this.addForm.goods_cat.length === 3){
                    return this.addForm.goods_cat[2]
                }
                return null
            }
        }
    }
</script>
<style lang="less" scoped>
.el-checkbox{
    margin:0 5px 0 !important;
}
.btnAdd{
    margin-top:15px;
}
</style>